public static float GetClosestDistanceApproach(Spell spell, Vector2 pos, float speed, float delay, Vector2 heroPos, float extraDist)
{
var walkDir = (pos - heroPos).Normalized();
if (spell.spellType == SpellType.Line && spell.info.projectileSpeed != float.MaxValue)
{
var spellPos = spell.GetCurrentSpellPosition(true, delay);
var spellStartPos = spell.currentSpellPosition;
var spellEndPos = spell.GetSpellEndPosition();
var extendedPos = pos.ExtendDir(walkDir, ObjectCache.myHeroCache.boundingRadius + speed * delay / 1000);
Vector2 cHeroPos;
Vector2 cSpellPos;
var cpa2 = MathUtils.GetCollisionDistanceEx(
heroPos, walkDir * speed, ObjectCache.myHeroCache.boundingRadius,
spellPos, spell.direction * spell.info.projectileSpeed, spell.radius + extraDist,
out cHeroPos, out cSpellPos);
var cHeroPosProjection = cHeroPos.ProjectOn(heroPos, extendedPos);
var cSpellPosProjection = cSpellPos.ProjectOn(spellPos, spellEndPos);
if (cSpellPosProjection.IsOnSegment && cHeroPosProjection.IsOnSegment && cpa2 != float.MaxValue)
{
return 0;
}
var cpa = MathUtilsCPA.CPAPointsEx(heroPos, walkDir * speed, spellPos, spell.direction * spell.info.projectileSpeed, pos, spellEndPos, out cHeroPos, out cSpellPos);
cHeroPosProjection = cHeroPos.ProjectOn(heroPos, extendedPos);
cSpellPosProjection = cSpellPos.ProjectOn(spellPos, spellEndPos);
var checkDist = ObjectCache.myHeroCache.boundingRadius + spell.radius + extraDist;
if (cSpellPosProjection.IsOnSegment && cHeroPosProjection.IsOnSegment)
{
return Math.Max(0, cpa - checkDist);
}
else
{
return checkDist;
}
//return MathUtils.ClosestTimeOfApproach(heroPos, walkDir * speed, spellPos, spell.direction * spell.info.projectileSpeed);
}
else if (spell.spellType == SpellType.Line && spell.info.projectileSpeed == float.MaxValue)
{
var spellHitTime = Math.Max(0, spell.endTime - EvadeUtils.TickCount - delay); //extraDelay
var walkRange = heroPos.Distance(pos);
var predictedRange = speed * (spellHitTime / 1000);
var tHeroPos = heroPos + walkDir * Math.Min(predictedRange, walkRange); //Hero predicted pos
var projection = tHeroPos.ProjectOn(spell.startPos, spell.endPos);
return Math.Max(0, tHeroPos.Distance(projection.SegmentPoint)
- (spell.radius + ObjectCache.myHeroCache.boundingRadius + extraDist)); //+ dodgeBuffer
}
else if (spell.spellType == SpellType.Circular)
{
var spellHitTime = Math.Max(0, spell.endTime - EvadeUtils.TickCount - delay); //extraDelay
var walkRange = heroPos.Distance(pos);
var predictedRange = speed * (spellHitTime / 1000);
var tHeroPos = heroPos + walkDir * Math.Min(predictedRange, walkRange); //Hero predicted pos
if (spell.info.spellName == "VeigarEventHorizon")
{
var wallRadius = 65;
var midRadius = spell.radius - wallRadius;
if (spellHitTime == 0)
{
return 0;
}
if (tHeroPos.Distance(spell.endPos) >= spell.radius)
{
return Math.Max(0, tHeroPos.Distance(spell.endPos) - midRadius - wallRadius);
}
else
{
return Math.Max(0, midRadius - tHeroPos.Distance(spell.endPos) - wallRadius);
}
}
var closestDist = Math.Max(0, tHeroPos.Distance(spell.endPos) - (spell.radius + extraDist));
if (spell.info.extraEndTime > 0 && closestDist != 0)
{
var remainingTime = Math.Max(0, spell.endTime + spell.info.extraEndTime - EvadeUtils.TickCount - delay);
var predictedRange2 = speed * (remainingTime / 1000);
var tHeroPos2 = heroPos + walkDir * Math.Min(predictedRange2, walkRange);
if (CheckMoveToDirection(tHeroPos, tHeroPos2))
{
return 0;
}
}
else
{
return closestDist;
}
}
else if (spell.spellType == SpellType.Arc)
{
var spellPos = spell.GetCurrentSpellPosition(true, delay);
var spellEndPos = spell.GetSpellEndPosition();
var pDir = spell.direction.Perpendicular();
spellPos = spellPos - pDir * spell.radius / 2;
spellEndPos = spellEndPos - pDir * spell.radius / 2;
var extendedPos = pos.ExtendDir(walkDir, ObjectCache.myHeroCache.boundingRadius);
Vector2 cHeroPos;
Vector2 cSpellPos;
var cpa = MathUtilsCPA.CPAPointsEx(heroPos, walkDir * speed, spellPos, spell.direction * spell.info.projectileSpeed, pos, spellEndPos, out cHeroPos, out cSpellPos);
var cHeroPosProjection = cHeroPos.ProjectOn(heroPos, extendedPos);
var cSpellPosProjection = cSpellPos.ProjectOn(spellPos, spellEndPos);
var checkDist = spell.radius + extraDist;
if (cHeroPos.InSkillShot(spell, ObjectCache.myHeroCache.boundingRadius))
{
if (cSpellPosProjection.IsOnSegment && cHeroPosProjection.IsOnSegment)
{
return Math.Max(0, cpa - checkDist);
}
else
{
return checkDist;
}
}
}
return 1;
}
